Question 31101
2/4=n/8..........

on cross multipication we get...

(2*8)/4 = n 

or n = 16/4

n = 4 

Now if you want to  verify you answer ,,,you can put the values of n in the equation and if you get LHS=RHS,,,this means that you answer is correct..here u must also convert ur LHS in to standarad form,,only then you get LHS=RHS 


hope this will help you 

Please feel free to revert back for any further queries.